Methods and compositions for compensating for cement hydration volume reduction

• US 20050204960A1
• Filed: 05/20/2005
• Published: 09/22/2005
• Est. Priority Date: 05/05/2003
• Status: Abandoned Application

• Current Assignee: James F. Heathman, Krishna M. Ravi
• Original Assignee: James F. Heathman, Krishna M. Ravi
• Inventors: Ravi, Krishna M., Heathman, James F.
• Application Number:
  US11/133,698
• Publication Number:
  US 20050204960A1
• Time in Patent Office: Days
• US Class Current: 106/672
• CPC Class Codes: C04B 20/1025 Fats; Fatty oils; Ester type waxes; Higher fatty acids; Derivatives thereof
• CPC Class Codes: C04B 2103/0029 Type A
• CPC Class Codes: C04B 2103/0035 Type G
• CPC Class Codes: C04B 2103/0036 Type H
• CPC Class Codes: C04B 2103/44 Thickening, gelling or viscosity increasing agents
• CPC Class Codes: C04B 2103/67 Biocides
• CPC Class Codes: C04B 22/04 Metals, e.g. aluminium used as blowing agent
• CPC Class Codes: C04B 24/02 Alcohols; Phenols; Ethers
• CPC Class Codes: C04B 24/08 Fats; Fatty oils; Ester type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
• CPC Class Codes: C04B 24/129 Compounds containing one or more nitrogen-to-nitrogen double bonds, e.g. azo-compounds
• CPC Class Codes: C04B 24/26 obtained by reactions only involving carbon-to-carbon unsaturated bonds C04B24/243 takes precedence
• CPC Class Codes: C04B 24/36 Bituminous materials, e.g. tar, pitch C04B24/243 takes precedence
• CPC Class Codes: C04B 24/38 Polysaccharides or derivatives thereof C04B24/243 takes precedence
• CPC Class Codes: C04B 28/02 containing hydraulic cements other than calcium sulfates
• CPC Class Codes: C04B 38/02 by adding chemical blowing agents
• CPC Class Codes: C04B 40/0028 Aspects relating to the mixing step of the mortar preparation
• CPC Class Codes: C04B 40/0039 Premixtures of ingredients
• CPC Class Codes: C09K 8/473 Density reducing additives, e.g. for obtaining foamed cement compositions

Abstract

A method and cementing composition that includes gas generating additives for compensating for or offsetting hydration volume shrinkage of the cementing compositions. The method comprises placing the cementing composition in a subterranean zone and allowing the cement composition to set into a solid mass therein.

Claims

1. A cementing composition comprising:

cement and a liquid composition comprising an active gas generating additive selected from the group consisting of aluminum powder and azodicarbonamide, wherein the active gas generating additive is coated or encapsulated with a surfactant and the surfactant is a fatty acid ester of sorbitan, glycerol or pentaerythritol.

2. The cementing composition of claim 1 wherein the surfactant is selected from the group consisting of sorbitan monooleate, sorbitan monoricinoleate, sorbitan monotallate, sorbitan monoisostearate, sorbitan monostearate, glycerol monoricinoleate, glycerol monostearate, pentaerythritol monoricinoleate, and mixtures thereof.

3. The cementing composition of claim 2 wherein the surfactant comprises sorbitan monooleate.

4. The cementing composition of claim 1 wherein the cement comprises Portland cement, pozzolan cement, gypsum cement, aluminous cement, silica cement, or alkaline cement.

5. The cementing composition of claim 1 wherein the cement is class A, G or H Portland cement.

6. The cementing composition of claim 1 wherein the cementing composition comprises from about 0.3 to about 5.0 percent of the active gas generating additive by weight of the cement.

7. The cementing composition of claim 1 wherein the cementing composition comprises greater than about 2.0 percent of the active gas generating additive by weight of the cement.

8. The cementing composition of claim 1 wherein the liquid composition comprises a liquid medium selected from the group consisting of water, low aromatic mineral oil, high aromatic mineral oil, vegetable oil, kerosene, diesel, fuel oil, esters, internal olefins, polyalphaolefins, paraffins, ethylene glycol, propylene glycol and mixtures thereof.

9. The cementing composition of claim 1 wherein the liquid composition further comprises a biocide, a thickener and an inhibitor.

10. The cementing composition of claim 9 wherein the thickener comprises a polymeric material selected from the group consisting of guar gum and derivatives thereof, locust bean gum, tara, konjak, tamarind, starch, cellulose, karaya gum, xanthan gum, tragacanth gum, arabic gum, ghatti gum, tamarind gum, carrageenan and derivatives thereof, carboxymethyl guar, hydroxypropyl guar, carboxymethylhydroxypropyl guar, polyacrylate, polymethacrylate, polyacrylamide, maleic anhydride, methylvinyl ether copolymers, polyvinyl alcohol, polyvinylpyrrolidone, carboxyethylcellulose, carboxymethylcellulose, carboxymethylhydroxyethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylhydroxypropylcellulose, methylcellulose, ethylcellulose, propylcellulose, ethylcarboxymethylcellulose, methylethylcellulose, hydroxypropylmethylcellulose, bentonite, attapulgite and laponite.

11. The cementing composition of claim 10 wherein the thickener is selected from the group consisting of hydroxyethylcellulose, carboxymethylhydroxyethylcellulose and guar gum.

12. A cementing composition comprising:

cement and a liquid composition comprising from about 0.3 to about 5.0 percent of an active gas generating additive by weight of the cement wherein the active gas generating additive is selected from the group consisting of aluminum powder and azodicarbonamide.

13. The cementing composition of claim 12 wherein the active gas generating additive is coated or encapsulated with a surfactant and the surfactant is a fatty acid ester of sorbitan, glycerol or pentaerythritol.

14. The cementing composition of claim 13 wherein the surfactant is selected from the group consisting of sorbitan monooleate, sorbitan monoricinoleate, sorbitan monotallate, sorbitan monoisostearate, sorbitan monostearate, glycerol monoricinoleate, glycerol monostearate, pentaerythritol monoricinoleate, and mixtures thereof.

15. The cementing composition of claim 14 wherein the surfactant comprises sorbitan monooleate.

16. The cementing composition of claim 12 wherein the cement comprises Portland cement, pozzolan cement, gypsum cement, aluminous cement, silica cement, or alkaline cement.

17. The cementing composition of claim 12 wherein the cement is class A, G or H Portland cement.

18. The cementing composition of claim 12 wherein the liquid composition comprises a liquid medium selected from the group consisting of water, low aromatic mineral oil, high aromatic mineral oil, vegetable oil, kerosene, diesel, fuel oil, esters, internal olefins, polyalphaolefins, paraffins, ethylene glycol, propylene glycol and mixtures thereof.

19. The cementing composition of claim 12 wherein the liquid composition further comprises a biocide, a thickener and an inhibitor.

20. The cementing composition of claim 19 wherein the thickener comprises a polymeric material selected from the group consisting of guar gum and derivatives thereof, locust bean gum, tara, konjak, tamarind, starch, cellulose, karaya gum, xanthan gum, tragacanth gum, arabic gum, ghatti gum, tamarind gum, carrageenan and derivatives thereof, carboxymethyl guar, hydroxypropyl guar, carboxymethylhydroxypropyl guar, polyacrylate, polymethacrylate, polyacrylamide, maleic anhydride, methylvinyl ether copolymers, polyvinyl alcohol, polyvinylpyrrolidone, carboxyethylcellulose, carboxymethylcellulose, carboxymethylhydroxyethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylhydroxypropylcellulose, methylcellulose, ethylcellulose, propylcellulose, ethylcarboxymethylcellulose, methylethylcellulose, hydroxypropylmethylcellulose, bentonite, attapulgite and laponite.

21. The cementing composition of claim 20 wherein the thickener is selected from the group consisting of hydroxyethylcellulose, carboxymethylhydroxyethylcellulose and guar gum.

22. A cementing composition comprising:

cement and a liquid composition comprising greater than about 2.0 percent of an active gas generating additive by weight of the cement wherein the active gas generating additive is selected from the group consisting of aluminum powder and azodicarbonamide.

23. The cementing composition of claim 22 wherein the active gas generating additive is coated or encapsulated with a surfactant and the surfactant is a fatty acid ester of sorbitan, glycerol or pentaerythritol.

24. The cementing composition of claim 23 wherein the surfactant is selected from the group consisting of sorbitan monooleate, sorbitan monoricinoleate, sorbitan monotallate, sorbitan monoisostearate, sorbitan monostearate, glycerol monoricinoleate, glycerol monostearate, pentaerythritol monoricinoleate, and mixtures thereof.

25. The cementing composition of claim 24 wherein the surfactant comprises sorbitan monooleate.

26. The cementing composition of claim 22 wherein the cement comprises Portland cement, pozzolan cement, gypsum cement, aluminous cement, silica cement, or alkaline cement.

27. The cementing composition of claim 22 wherein the cement is class A, G or H Portland cement.

28. The cementing composition of claim 22 wherein the liquid composition comprises a liquid medium selected from the group consisting of water, low aromatic mineral oil, high aromatic mineral oil, vegetable oil, kerosene, diesel, fuel oil, esters, internal olefins, polyalphaolefins, paraffins, ethylene glycol, propylene glycol and mixtures thereof.

29. The cementing composition of claim 22 wherein the liquid composition further comprises a biocide, a thickener and an inhibitor.

30. The cementing composition of claim 29 wherein the thickener comprises a polymeric material selected from the group consisting of guar gum and derivatives thereof, locust bean gum, tara, konjak, tamarind, starch, cellulose, karaya gum, xanthan gum, tragacanth gum, arabic gum, ghatti gum, tamarind gum, carrageenan and derivatives thereof, carboxymethyl guar, hydroxypropyl guar, carboxymethylhydroxypropyl guar, polyacrylate, polymethacrylate, polyacrylamide, maleic anhydride, methylvinyl ether copolymers, polyvinyl alcohol, polyvinylpyrrolidone, carboxyethylcellulose, carboxymethylcellulose, carboxymethylhydroxyethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, methylhydroxypropylcellulose, methylcellulose, ethylcellulose, propylcellulose, ethylcarboxymethylcellulose, methylethylcellulose, hydroxypropylmethylcellulose, bentonite, attapulgite and laponite.

31. The cementing composition of claim 30 wherein the thickener is selected from the group consisting of hydroxyethylcellulose, carboxymethylhydroxyethylcellulose and guar gum.